A Saudi-led military coalition on Monday announced $1.5bn in new humanitarian aid for Yemen, after the United Nations made what it called a record appeal for assistance for the war-ravaged country.

Over the past year, the UN's efforts to address what it has described as the world's worst humanitarian crisis have been hampered by a crippling blockade of rebel-held ports by the Saudi-led coalition.

The coalition pledged up to $40m for the expansion of ports to accommodate additional humanitarian shipments, adding that it would set up an air corridor between Riyadh and the central Yemeni province of Marib to run multiple aid flights of C130 cargo planes.

In 2017, worldwide donors provided 1.65 billion of the Dollars 2.34 billion requested by the United Nations and humanitarian partners in Yemen. The rebels, known Houthis, who are backed by Iran, still control the capital, Sanaa, and territory in Yemen's north, which borders Saudi Arabia.

Last week, Saudi Arabia deposited $2bn in Yemen's central bank after the government appealed for help to save the country's currency from collapse and prevent a starvation.

Coalition spokesperson colonel Turki Al-Maliki told state-run Saudi Press Agency that the missile was detected at around 12:38pm after being fired from Yemen's Saada Governorate.

The almost three-year civil war has pushed the country to edge of starvation with outbreaks of cholera and diphtheria.

Yemen's defenseless people have been under massive attacks by the coalition for more than two years but Riyadh has reached none of its objectives in Yemen so far. There were no reports of casualties or damage.

The appeal, made on behalf of United Nations agencies and humanitarian partners, came as 11.3 million people "urgently require assistance to survive", United Nations aid agency OCHA said in a statement. The U.S. supports the coalition with refuelling, logistics and intelligence.

The move also coincides with Norway's decision earlier this month to suspend all arms sales to the UAE over its involvement in the ongoing war in Yemen.

Aid groups that say coalition airstrikes are destroying critical infrastructure and that the coalition needs to do more to facilitate the delivery of staple goods at Yemen's ports. The kingdom, however, has not disclosed how much it spends on the war in Yemen.